Don't think this reciprocating one was ever made. Jan 8, 2021 4:32:53 GMT ckfan likes this Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by coldspaces on Jan 8, 2021 4:32:53 GMT patents.google.com/patent/US1765289A/en?inventor=Steenstrup+Christian&page=4
Don't think this reciprocating one was ever made. Jan 9, 2021 13:08:01 GMT via mobile Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by ckfan on Jan 9, 2021 13:08:01 GMT That looks similar to the DR oscillating cylinder design. I’m not sure what the doo dad on top of the cylinder is for though.